Date: Sat, 4 Apr 2026 17:53:24 -0700 From: Rick Macklem <rick.macklem@gmail.com> To: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Re: Getting boottime early in booting Message-ID: <CAM5tNy6PH%2B7vMnSwS91vRnDn7r5tNyZdw7v3HnxykoAcUGKm1Q@mail.gmail.com> In-Reply-To: <CAM5tNy4mPmG=OmQtiGrMQ8NnPZrN=dw_Xw1h9=s4iyOLiZCWng@mail.gmail.com>
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On Fri, Apr 3, 2026 at 6:05 PM Rick Macklem <rick.macklem@gmail.com> wrote: > > Hi, > > I'm fiddling with a NFSv4 diskless root fs setup and I've run > into a couple of challenges. > > 1 - I need a value that will be different each time the machine boots. > I would normally use getboottime(), but for the NFS root fs mount, > it just returns 0. > Any ideas w.r.t. something I can acquire early in booting that will > change each time the system is booted? > > 2 - Does anyone know how to fix "could not determine audit condition" > which I get whenever I try and login when it is multiuser? > (I can run single user, but since I can't login once it's multiuser??) Btw, in case anyone is interested, #2 was caused by the conf/base/var.cpio.gz file (used to create the md fs for /var) was too big for a 5Mbyte md. (Getting rid of some stuff in it fixed the problem.) I now have a NFSv4.2 root fs working ok, thanks to some help here w.r.t. getting a new value upon each boot. https://docs-archive.freebsd.org/doc/8.4-RELEASE/usr/share/doc/freebsd/handbook/network-pxe-nfs.html is pretty good, but does miss a couple of things. There's making sure the files for the md file systems aren't too big (or configuring the md's to be larger) and there's /tmp, which isn't mentioned. --> There is also dealing with setting up hostuuid when there are multiple clients using the read-only root fs. I'm not quite sure what is appropriate here? - Maybe making /etc/hostid a symlink to a file in /var and then having /etc/rc.d/hostid create the file when it doesn't exist, or something like that. (For systems that don't have smbios.system.uuid this would result in a different setting each boot, but the only alternative I can think of would be a site local DHCPD option to specify it. (This isn't a NFSv4 problem, but a shared read-only root fs problem.) Anyhow, if someone on the doc side feels like improving the above a little, that would be nice, rick > > Thanks for any help with these, rickhome | help
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